Chung Cheng University Institutional Repository
Not a member yet
    889 research outputs found

    影響採用智慧家庭安全防護系統意圖之因素;The Factors Influencing Intentions to Use Smart Home Security Systems

    No full text
    [[abstract]]隨著網際網路的快速發展,帶來了物聯網的時代,其商機所帶來的各類型應用裝置也對民眾產生重大影響,而智慧家庭則是其中一項,不論在任何時間、地點,均能隨時查看家中動態,使民眾更加快速取得資訊,進而改變?以往的?為模式,智慧家庭的廣泛應用,更可讓民眾隨時隨地取得家中安全防護的現況。因此,瞭解哪些因素讓民眾採用智慧家庭安全防護系統,透過文獻彙整提出研究模式,以探討影響民眾採用智慧家庭安全防護系統意圖之因素。本研究採用網路問卷調查收集資料樣本,並連結於智慧家庭相關論壇、社群網站、PTT等,共計有效問卷234份。資料分析方法採結構方程模式,並以SPSS 22.0與SmartPLS 3.0作為主要統計分析工具,驗證研究模型中各變數的因果關係。研究結果顯示,個人會因習慣、沉沒成本與轉換成本產生慣性,造成現狀偏差,使慣性的部分中介效果,對知覺易用性產生負向顯著的影響,對相對優勢則有間接影響而非直接影響,而慣性對採用意圖與調節主觀規範至採用意圖間,則無顯著的影響,另外,知覺安全威脅、知覺財物威脅、知覺易用性、相對優勢、主觀規範與資訊品質信任等科技接受相關因素,則具有正向顯著影響採用意圖。期望藉由本研究之結論及建議,能做為產官學界對於智慧家庭安全防護系統之參考,帶來其貢獻之處。 With the rapid development of the internet, it has brought about the age of the “Internet of Things.” Under the internet of things, there are various types of applications, which are generated by its business opportunities, causing great influences on the public. One of the examples that belongs to this group is smart home security system. No matter where and when a person is, it is possible for him/ her to monitor what happens at home, which enables the public to get the information immediately; thus, changes people’s behavior patterns. Besides, the widely-applied smart home system makes it easier for the masses to know the security condition at home beyond the limit of time and location. Therefore, through analyzing the references, the research model was proposed in order to examine the reasons why people intend to use the smart home security system.The data samples in this research were collected through investigating the online questionnaires, the online forums, social networking sites, and PTT that were related to the home security system. In total, there were 234 valid questionnaires. As for the data analysis method, this research was developed by the structural equation model. In order to analyze the statistics, SPSS 22.0 and SmartPLS 3.0 were used as the main accesses to verifying the cause and effect relationship between each variable in the research model. The result indicated that personal habits, the sunk costs, and the transition costs were the reasons why the inertia was generated. Furthermore, the perceived ease of use was partially mediated by the current deviation attributed from the inertia. On the other hand, the inertia had little influence on intending to use the system and adjusting the subjective norm. On the contrary, the perceived safety threat, the perceived financial threat, the perceived ease of use, the relative advantage, the subjective norm, and the information quality trust significantly influenced the intention to use the system positively.All in all, with the results and suggestions, it is anticipated that this research serves as a valid reference for the smart home security system, making great contributions to the industry-government-university field

    台灣資本資產定價模型之研究:GMM 與HJ 距離法;On Study of the Asset Pricing Model on Taiwan’s Stock Market:GMM and HJ distance

    No full text
    [[abstract]]本文主要探討在隨機折現因子架構下非條件與條件CAPM 與Fama-French 三因子模型對於台灣50成分股的適用性。國內文獻中大多使用Fama-MacBeth 兩階段迴歸研究上述模型對台灣股市的解釋能力, 其結果皆顯示兩模型皆不適用於台灣股市。Petersen (2009)指出Fama-MacBeth 兩階段迴歸可能會造成估計偏誤, 故本文使用Hansen (1982)GMM估計、empirical likelihood 與HJ 距離再次檢視上述模型對於台灣股市的適用性。本文使用條件資產定價模型, 探討控制不同的條件變數時, CAPM 與Fama-French 三因子模型的表現, 並與非條件因子模型做比較討論。實證研究結果發現條件與非條件CAPM 與Fama-French 三因子模型皆不適用於解釋台灣50個股報酬, 但由HJ 距離衡量量模型表現可看出CAPM 的表現較佳

    公司特性、相對績效與股東權益報酬:分量迴歸模型與隨機邊界模型之應用與比較;Firm Characteristics, Relative Efficiency, and Equity Returns with Application of Quantile Approach in Contrast of Stochastic Frontier Approach

    No full text
    [[abstract]]財務文獻中,企業技術效率與資產價格間的連結在過去的研究成果中是相對較少被討論。在Nguyen和Swanson (2009)的研究透過隨機邊界模型(Stochastic Frontier Approach)的方法去估計企業的技術效率並建構該效率與資產溢酬間的連結。本研究使用臺灣證券交易所之上市公司股票報酬在分量迴歸模型(Quantile Approach)的架構下去延伸Nguyen和 Swanson (2009)的研究成果,並同時呈現在隨機邊界模型與分量迴歸模型估計下的迴歸結果做比較去探討兩迴歸估計結果之效率分組對超額報酬影響之異同。此外,除了評估超額報酬與效率之間的關係外,本研究亦探討控制公司特性的超額報酬與效率分組之間的關係,並透過Fama-French與Carhart(1995)四因子模型去探討構成超額報酬的因子有哪些。研究結果發現,在臺灣股票市場中,不論是風險性超額報酬還是控制公司特性下之超額報酬,高效率投資組合的報酬均對低(無)效率投資組合報酬擁有正的技術溢酬。而分量迴歸與隨機邊界模型兩種效率估計方式之估計結果與股價報酬間的關係在平均加權下的投資組合報酬中效果相同。 The economic link between firm efficiency and asset price remains relatively less discussed. Nguyen and Swanson (2009) build the linkage between firm productivity efficiency and stock’s premium with stochastic frontier approach (SFA). This paper extends Nguyen and Peggy’s study with quantile approach to estimate firm’s technical efficiency while also offers estimated results from SFA. Through the estimation result of efficiency score, we discuss the relationship between excess return and efficiency scores for listed firms in Taiwan stock market. Moreover, we also discuss the linkage between firm characteristics benchmark-adjusted returns and efficient score portfolios. The empirical results find that, in Taiwan stock market, firms in EFFICIENT portfolio have efficient premium to outperform than firms in INEFFICIENT portfolio. Finally, the estimation results from quantile approach and stochastic frontier approach are quite close to each other

    醫院卓越計畫政策效果;The Policy Effects of Hospital Excellence Initiatives in Taiwan

    No full text
    [[abstract]]  本論文探討在總額預算制度底下的醫院,自願參加或者可能被要求配合參加醫院卓越計畫後,是否因為擁有個別醫院小總額而無須再與其他醫院競爭大總額,策略從提高門診量轉變成降低門診量。健保局在2002 年7 月推出總額預算制度後,又在2004年7月總額預算制度底下推出醫院卓越計畫,此計畫除了提供醫院脫離競爭大總額下囚犯困境的機會,也提供在實證上檢驗醫院是否在大總額下提高服務量。因為在總額預算制度下,並沒有未參加制度的控制組醫院可以作為對照組,透過制度實施前後相比來進行實證分析並無法證明醫院提高服務量是來自總額預算的效果,所以藉由評估醫院卓越計畫效果,如果醫院脫離競爭大總額擁有個別小總額後降低服務量,其背後也隱含著醫院在競爭大總額時有提高服務量。使用健保資料庫串聯衛生署統計資料庫取得2002 至2004 年159 家醫院的每月門診量,其中81 家參加計畫,78 家未參加。實證分析上先採用Difference-in Difference 估計,結果顯示參加計畫的醫院有顯著達到減少門診量的效果。由於參加計畫的醫院有自願選擇參加內生性和可能被要求配合參加外生性兩個部分,所以進一步嘗試將參加組的樣本醫院區分定義自願參加與可能被要求參加。針對計畫內生性部分使用Fixed Effects Model 搭配工具變數,分別估計全體樣本以及定義自願參加的醫院。外生性部分則再使用Difference-in Difference 估計定義可能被要求參加的醫院。以全體樣本估計結果顯示參加計畫的醫院沒有減少門診量但不顯著,但自願參加的醫院顯著減少門診量,可能被要求參加的醫院則有減少門診量,但統計上不顯著的效果

    電子商務O2O模式銷售及收款循環之研究;The Study on Sales and Cash Receipts Cycle of Online-to-Offline(O2O) Model of E-Commerce

    No full text
    [[abstract]]隨著網際網路的運用在日常生活不斷普及成長迅速,電子商務已經融入人們的日常生活中,網上購物、電子繳費等眾多電子交易方式也為人們創造了便利及高效的生活方式,不分男女老少都開始使用電子商務網站來交換各種資訊,並進行商業交易。 從整體發展趨向來看,電商已然成為全球性各企業主要的發展潮流。電商的存在和發展,主要是以網路技術不斷的改革及創新為前提。電商系統的建置、運行及維護,都離不開資訊技術的支援。在此同時,我們也要考慮到其它協力單位的支援,資訊技術加上人力技術資源,經過整合後,目的是可以創造另一種新型態的商業模式。 本研究運用訪談方式,了解傳統製造業的銷售及收款循環的流程,接下來運用REA設計新型態的銷售流程,透過流程再造的內部控制觀念來進行平台的建置,使整個銷售流程能夠順暢並符合內部控制之規章。 The study of Internet is becoming more popular and related application is growing rapidly. E-commerce has been integrated into people's daily lives, e.g. online shopping, e-payment and other electronic trading which bring people a more convenient and efficient lifestyle. As a whole, e-commerce has become a main trend for all the enterprises in global. The existence and development of e-commerce, mainly is basing on the continuously technology evolution and innovation. The buildup, operation as well as the maintenance of e-commerce system is inseparable from information technology support. In the meantime, we have to take into account that the other support from third-party like the information technology with Human Resources Technology and after integration, it aims to create another new type of business model.In this study, we learn the transaction and accounts receivable process of traditional manufacturing industry which followed by the use of REA to establishment the new model of Sales and Cash Receipts Cycle. Through the process reengineering of internal control concept to build the platform, such that the entire transaction process will go smoothly to comply with the regulations of internal control

    勞資爭議獨任調解人調解機制之探討;A Study on the Mediation Mechanism for Labor Dispute Sole Mediators

    No full text
    [[abstract]]我國勞資爭議調解制度,在國民政府於1928年6月9日所公佈之勞資爭議處理法,從制定公布以來,到現在已經有7次的修正,但是大致上勞資爭議的處理架構並未有重大的改革。該法為我國之政府機關,也就是勞工主管機關在處理勞資爭議糾紛的重要程序,也就是現在的勞資爭議處理,以及維持勞雇合諧中的重要依據,而勞資爭議處理法之「調解」係指在爭議事件發生後,當事人無法自行解決,而依該法向勞工工作所在地的縣(市)政府,勞工主管機關申請調解,由中立的第三方協助雙方達成可以接受的方案。   早期也就是20年前的1975年初才2,200件左右,到1995年的8,000件,到2014年達到22,700件之多,已經超過政府機關人力的極限。因此陸續有民間的協會加入調解,但是也無法消化日益增多之調解案件。在2009年7月1日勞資爭議處理法修正公布全文60條;施行日期為2011年5月1日施行。自此走入獨任調解人制度,而獨任調解人和調解委員不同之處主要在於:進行調解工作的人數差異。  勞資爭議獨任調解人:除了擔任會議主席;並且也是勞資雙方的調解人,一人獨自全攬全場的調解過程,肩負著勞資爭議調解的成敗,可謂任務重大,由此亦可見獨任調解人的重要性。  本研究是針對獨任調解人調解機制之探討,研究過程中有一些限制:如不能直接訪談案件之當事人,又不能公布訪談對象之姓名,因為有個資法及隱私的問題!因此必須在條件很差的情況下,進行獨任調解人在處理爭議案件,所遇到的情形加以分析、研究解決之道。因此本研究有其價值觀和實用型,希望本研究能夠提供「獨任調解人」在調解時所碰到的情形加以排除和應對,使得能夠順利進行勞資爭議調解以嘉惠勞資雙方之合諧。本研究的結論與建議也提出:中央主管機關勞動部可以建立網路平台,使全國400多位獨任調解人可以有一個討論的平台。如果法令有修正時,可以在平台上即時公佈,藉此達到獨任調解人能迅速了解法令修正之內容,使得調解爭議時更加順暢。 In accordance with labor dispute processing system in our country, there are seven revises from the formulate date of publication on June 9, 1928. Despite this, there are no major changes in labor disputes processing. Since then the Labor Dispute Act has become an important basis for handling labor disputes and bring workers and employers all into harmony. They applied for mediation from labor working of the county and city government if the parties can’t resolve the dispute on their own .The governments as an impartial third party assist the parties in reaching an acceptable solution. This study focused on the mediation mechanism for labor disputes sole mediators, emphasizing on a sole mediator facing many kinds of situations while in the coordination process, discussing the mediation how to work. There are eight sole mediator were interviewed, three from New Taipei City, three from Taichung City, two from Tainan City. All process and data are following Personal Information Protection Act. Finally, there are some recommendations below. The central competent authority should build an online platform, which can make good use of discussing room by 400 sole mediators. Any amended law can make public as soon as possible on it. Therefore, sole mediators can deal with those labor disputes smooth

    角色拓展自我效能對工作與家庭衝突之影響—以科技輔助追加工作為中介變項與疆界彈性為調節變項;The Impact of Role Breadth Self-Efficacy on Work and Family Conflict- The Mediating Effect of Technology-Assisted Supplemental Work and Boundary Flexibility as a Moderator

    No full text
    [[abstract]]在現今科技發達之環境下,科技介入人們的生活之中,不論在工作或是家庭生活裡,使得個人在工作與家庭間角色之轉換更為頻繁,在角色身分上之掌握當然也更加重要,其中於工作以及家庭所產生之衝突現象是否更為加重呢?是否有可以調節改善的方式呢?故本研究主要以角色拓展自我效能為自變項,目的在探討角色拓展自我效能對工作與家庭衝突之影響,並檢視科技輔助追加工作與角色拓展自我效能之關係,同時探討疆界彈性在兩個變項之間的調節效果。 本研究以台灣地區排除國營事業之外的國際化製造業行政從業人員為研究對象,問卷發放主要採用便利抽樣,並使用自填式紙本問卷對樣本進行資料蒐集,總計共回收335份有效問卷。 且本研究以描述性統計分析、信度分析、驗證性因素分析、相關分析及階層迴歸分析等方法檢驗研究假設,經驗證分析回收之335份有效問卷得到以下結果:一、角色拓展自我效能對工作對家庭衝突具有顯著正向之影響。二、角色拓展自我效能對於科技輔助追加工作具有顯著正向之影響。三、科技輔助追加工作對於工作對家庭衝突具有顯著正向之影響。四、角色拓展自我效能對於疆界彈性具有顯著正向之影響。五、工作疆界彈性對於家庭對工作衝突具有顯著負向之影響。六、家庭彈性意願對於工作對家庭衝突具有顯著正向之影響; 家庭彈性能力對於工作對家庭衝突具有顯著負向之影響。七、科技輔助追加工作對於角色拓展自我效能對工作與家庭衝突具有完全 中介效果。八、疆界彈性對於角色拓展自我效能對工作與家庭衝突未具顯著調節效果。 此外,研究並發現科技輔助追加工作對於角色拓展自我效能對於工作對家庭有完全中介之效果,雖然由迴歸分析中發現疆界彈性之調節效果並不顯著,但藉由相關分析中也發現疆界彈性單獨對於工作對家庭衝突或工作對家庭衝突之間的影響都是很明顯的,因此亦可以說明不用考量其他條件、變項,單就疆界彈性此一調節變項本身,對於工作與家庭衝突就非常有影響力。因此,就上述發現本研究提出幾點建議,主要分為兩大面向,一是針對政府以及企業端,另一則是針對工作者本身,列述如下:一、對於政府與企業之建議:透過正式規章加強規範科技輔助追加工作之應用,如明確界定運用科技加班之準則,且若運用此一方式加班之加班費用如何計算等。以有效管理科技輔助追加工作之程度與頻率。二、對於工作者之建議:不論對於自身在工作上有多高之要求,或是放多大的重心在家庭上,個人仍需了解事情的輕重緩急,做好疆界的防守,好好的掌握自我的時間,譬如與家人同遊時不帶工作筆電、工作時不開私人訊息等。並適當的抒放壓力,相信對於工作與家庭之衝突能有所改善。 In today's developed environment of science and technology, science and technology are involved in people's lives, work or family life, making the individual work and family role in the conversion more frequently in the role of the mastery of course, more important. Is the conflict between the work and the family more aggravated? Is there a way to adjust the improvement? Therefore, the main purpose of this research is to discuss the influence of role breadth self-efficacy on work and family conflict and review the relationships between technology-assisted supplemental work and role breadth self-efficacy, in the meantime, probe into the moderation effect of boundary flexibility in between.The employees of private sectors apart from the national enterprises in Taiwan are the objects of this study. The questionnaires were released by convenience sampling and self-administered questionnaires were adopted for data collection. A total of 335 valid questionnaires were recycled for the survey.The hypotheses in this research were tested by methods including descriptive statistical analysis, reliability analysis, confirmatory factor analysis, correlation analysis and multiple hierarchical regression analysis. The following are the result of validation analysis:1. Role breadth self-efficacy has significantly positive effect on work and family conflict.2. Role breadth self-efficacy has significantly positive effect on technology-assisted supplemental work.3. Technology-assisted supplemental work has significantly positive effect on work and family conflict.4. Role breadth self-efficacy has significantly positive effect on boundary flexibility.5. Work boundary flexibility has an obviously negative effect on family and work conflict.6. Family flexibility willingness has a significantly positive effect on work and family conflict. Family resilience has an obvious negative effect on work and family conflict.7. Technology-assisted supplemental moderator has a complete mediator effect on role breadth self-efficacy to work and family conflict.8. Boundary flexibility has no significantly positive moderator effect on role breadth self-efficacy to work and family conflict.In addition, the research found that the technology-assisted supplemental work for the role of self-efficacy for the work of the family has a complete intermediary effect. Although the regression analysis found that the adjustment of the border elasticity is not significant by the relevant analysis of the border elasticity alone. The effect of work on family conflicts or work on family conflicts is obvious, so it can also be stated that there is no need to consider other conditions and variables and influences.Therefore, the proposed findings of this study, mainly divided into two major aspects, one for the government and the enterprise side, the other is for workers themselves, as followings:1. For government and enterprise proposals: to strengthen the application of standardized science and technology-assisted supplemental work through formal regulations, such as a clear definition of the use of science and technology overtime standards, and if the use of this way to work overtime and how to calculate the overtime salary. To effectively manage the degree and frequency of technology-assisted supplemental work.2. For the workers of the proposal: no matter how high their own requirements in work, or put too much focus on the family, the individual still need to understand the priorities of the matter, do the defense of the border, a good grasp of self-time, With the family travel with no working computer, work does not open the private message. And appropriate to show the pressure, I believe that the conflict between work and family can be improved

    利用地形資訊及射線追蹤技術之 5G 通道模型實作;Implementation of Map-based 5G Channel Model with Ray-tracing Technique

    No full text
    [[abstract]]國際5G系統規格制訂已經正式開始,世界各國皆已開始投入其中。METIS為歐盟研究5G的一項大型計畫,其研究之內容很有可能收錄在未來5G的國際標準規範中,由於現有的通道模型已無法滿足5G系統之要求,因此METIS基於測量與分析數據開發了新的通道模型,本文為根據METIS D1.4 “Initial channel models based on measurements”[1] 中的Map-based channel model(地形資訊通道模型)進行研究,以馬德里地圖為模型建立其環境,並使用簡易的射線追蹤技術(ray-tracing technique)模擬出電磁波的傳輸路徑,便可得知不同傳輸路徑下的路徑損失及電磁波發射、接收之角度,進而分析其傳輸通道的情況。 The specifications of 5G communication systems has been officially started. Every countries around the world have begun to invest it. Since none of the existing channel models in the literature satisfies 5G systems’ requirement, METIS develop new channel models based on extensive measurement campaigns and analysis com-plemented by computer simulations. In this paper, our research is according to Map-based channel model in METIS D1.4 ”Initial channel models based on meas-urements”[1]. Using the Madrid map as a model to establish simulation environment, and using simple ray-tracing technique to simulate the transmission path from transmitter to receiver. Then we can know the pathloss and angle of arrival/departure for different transmission path. Finally we can get channel impulse responses to analyze the transmission channel

    可調整的硬體設計與實現應用於格拉姆矩陣之反矩陣運算;Scalable Hardware Design and Implementation for Matrix Inversion of Gramian Matrices

    No full text
    [[abstract]]近年來無線通訊開始往大量天線系統(large antenna system, LAS) 的研究與發展, 當然這其中有些困難與需要突破之處, 例如: 由於大量天線的關係, 會使得矩陣的大小較大的情況, 在處理方面較為麻煩, 而其中在檢測器(detector) 方面,像是zero-forcing 、MMSE(mininmum mean square error) detectors 中, 會需要處理格拉姆矩陣(Gramian Matrix) 的反矩陣運算, 本論文對於反矩陣運算進行硬體設計, 並且有規律的在增加維度的情況下硬體要如何增加設計, 以應用在不同維度下的反矩陣運算達到可調整(scalable) 的硬體設計, 而反矩陣的運算是透過LDL分解減少反矩陣運算的複雜度, 在硬體設計方面, 總共分為三部分, 一是計算LDL分解的L 、D矩陣, 二是計算L反矩陣, 最後運算所要計算的反矩陣, 透過運算完所需要的值更新後面的值的設計, 來達到在每次運算下的最大複雜度相同, 所以增加維度時, 硬體方面只需要增加一塊相同的運算單元(process element, PE) 即可, 以達到硬體方面上的可調整性, 最後在硬體實現上, 使用Xinlinx ISE 14.7進行VerilogHDL 撰寫以及RTL 上的驗證, 以及使用內建的驗證軟體來觀察輸入與輸出的正確性, 然後再使用CIC 的工作站用Synopsys Design Compiler 進行gate-level 的電路合成。 In recent years, research and development of the wireless communication systemhas evolves to the scenario of large antennas, or the large antenna system (LAS). One difficulty for implementing such system is the processing of the matrices with large size. For example, the well-known zero-forcing (ZF) and minimum mean square error (MMSE) detectors require the computation of Grammian matrices of size equal to the number of transmit antennas. In this thesis, the scalable hardware design for matrix inversion of matrices of various sizes is studied. To compute the matrix inversion of Grammian matrices, computationally efficient LDL decomposition is applied at the algorithmic level. The algorithm is mapped to produce our proposed hardware design, which is comprised of three blocks: the block for calculating the L-matrix and D-matrix from the LDL decomposition, the block for calculating the matrix inverse of the L- matrix, and the block for calculating the matrix inverse. To obtain a design for scalable hardware architecture, our proposed architecture can compute the matrix inverse of a larger matrix if additional processing elements are added. Through the operation of the required value at the same time update the value in design to achieve the same maximum complexity in each operation. The proposed design is described by Verilog HDL and synthesized by Synopsys Design Compiler. Further implementation results are reported in the thesis

    3GPP LTE-A Release 13 下行鏈路預編碼多天線系統碼字挑選器的硬體架構設計與實現;Design and Hardware Implementation of the Codeword Selection for the Downlink Transmission of Precoded MIMO System in the 3GPP LTE-A Specification Release 13

    No full text
    [[abstract]]無線通訊發展至今, 使用多輸入多輸出(MIMO)結合正交分頻多工技術(OFDM)的無線通訊系統是當前通訊發展的主流趨勢, 而MIMO 系統中的預編碼技術是本篇論文所探討的重點。在實際系統中, 利用適當的挑選法則(selection criterion) 從編碼簿(codebook) 中挑選出最佳的碼字(codeword) 當作預編碼矩陣(precoding matrix), 回傳至傳送端以提升MIMO 系統傳輸的可靠度。本論文所使用的編碼簿為3GPP LTE Release 13所提出的下行鏈路(physical downlink shared channel) 編碼簿。隨著MIMO 所使用的天線數不斷的增加, 相應的編碼簿的碼字數目也越來越多, 使得挑選法則所需計算的數量越趨龐大, 因此我們針對了八根傳送天線的編碼簿提出了一種算法有效降低挑選法則所需的計算量, 進而減少預編碼系統的硬體運算複雜度。在硬體實作上, 我們使用Xilinx ISE 14.7來撰寫Verilog HDL code 以完成系統的暫存器傳輸級(register-transfer level, RTL) 模型, 並搭配使用Matlab 驗證RTL 模型的功能正確性, 最後再使用CIC 提供的Synopsys Design Compiler並採用TSMC90nm CMOS 製程來進行ASIC (application-specific integrated circuit) 電路合成。 The multiple input multiple output (MIMO) technique combined together with the orthogonal frequency division multiplexing (OFDM) is the mainstream of current wireless communication system. Among the various MIMO techniques, the precoding with limited feedback is the focus of this thesis. In the practical communication system, the optimal codeword is selected by the receiver from a finite-sized codebook following an appropriate selection criterion. The selected codeword is then sent back to the transmitter side. Next, the transmitter sends out precoded signals to improve the transmission reliability. The codebook considered in this paper is the physical downlink shared channel codebook adopted by the 3GPP LTE Release 13. Generally, as the number of transmitted antennas increases, the number of codewords in the corresponding codebook increases, resulting in a more complex codeword selection algorithm. In this thesis, we propose an algorithm for effectively reducing the computational complexity of the codeword selection for the transmitter with 8 antennas. We also propose a low cost hardware architecture for implementing our proposed algorithm. We compile our Verilog HDL code in the Xilinx ISE 14.7 environment to generate the register-transfer level (RTL) model for our proposed architecture. The RTL model is synthesized by the Synopsys Design Compiler to generate Application Specific Integrated Circuit (ASIC) under the TSMC 90nm CMOS process

    2

    full texts

    889

    metadata records
    Updated in last 30 days.
    Chung Cheng University Institutional Repository
    Access Repository Dashboard
    Do you manage Open Research Online? Become a CORE Member to access insider analytics, issue reports and manage access to outputs from your repository in the CORE Repository Dashboard! 👇